---
product_id: 287767583
title: "2pcs 3/4-Inch / 20mm Diamond Drill Bits, Small Diamond Hole Saw Hollow Core Drill Bits for Glass Ceramic Porcelain Tiles Marble Granite Quartz"
brand: "phituoda"
price: "€ 17.40"
currency: EUR
in_stock: true
reviews_count: 13
category: "Phituoda"
url: https://www.desertcart.com.cy/products/287767583-2pcs-3-4-inch-20mm-diamond-drill-bits-small-diamond
store_origin: CY
region: Cyprus
---

# Diamond-coated for ultra-precise cuts High-speed steel core for durability Nickel-plated corrosion resistance 2pcs 3/4-Inch / 20mm Diamond Drill Bits, Small Diamond Hole Saw Hollow Core Drill Bits for Glass Ceramic Porcelain Tiles Marble Granite Quartz

**Brand:** phituoda
**Price:** € 17.40
**Availability:** ✅ In Stock

## Summary

> 💎 Drill like a pro, cut like a boss — flawless holes every time!

## Quick Answers

- **What is this?** 2pcs 3/4-Inch / 20mm Diamond Drill Bits, Small Diamond Hole Saw Hollow Core Drill Bits for Glass Ceramic Porcelain Tiles Marble Granite Quartz by phituoda
- **How much does it cost?** € 17.40 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/287767583-2pcs-3-4-inch-20mm-diamond-drill-bits-small-diamond)

## Best For

- phituoda enthusiasts

## Why This Product

- Trusted phituoda brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** High-speed steel with nickel plating ensures long-lasting, rust-free performance
- • **Smooth Operator:** Thick diamond dust coating delivers clean cuts with zero chipping or cracking
- • **Versatile Mastery:** Effortlessly drills through ceramic, porcelain, marble, granite, quartz, and more
- • **Precision Perfected:** 3/4" (20mm) cutting diameter for flawless holes in glass, tile, and stone
- • **Confidence Guaranteed:** 90-day hassle-free money-back promise backed by 5-star customer love

## Overview

PHITUODA’s 2-piece 3/4-inch diamond drill bit set combines industrial-grade high-speed steel with a thick diamond coating and corrosion-resistant nickel plating to deliver precision holes in glass, ceramic, porcelain, marble, granite, and quartz. Designed for smooth, chip-free cutting with water lubrication, these bits offer durability and versatility for professional-grade results, backed by a 90-day satisfaction guarantee.

## Description

desertcart.com: PHITUODA 2pcs 3/4-Inch / 20mm Diamond Drill Bits, Small Diamond Hole Saw Hollow Core Drill Bits for Glass Ceramic Porcelain Tiles Marble Granite Quartz : Tools & Home Improvement

Review: Works Well on Terracotta - This bit was a great value because it performed exactly as I had hoped. I used the bit to drill a hole to insert a spigot into a terracotta planter. The pot will be used with a rainchain to collect and divert roof runoff water. I used a regular handheld drill on fast speed at first to make an indentation into the pot and then I used slow speed to drill the hole. I poured water over the area about every 5 seconds to keep the pot from cracking. I found the bit easy to use because I didn't even have to press hard with the drill and I have small hands and am not partcularly strong. The hole (lol) process took less than five minutes and the bit seems barely worn. In the pictures, the worn bit is on the left. I used size 25mm for a 1 inch hole but had to enlarge the hole slightly because of the threads on the spigot; the 26mm bit would have worked better. I think I got my money's worth.
Review: Does the job - I brought this for a specific job, cutting hole for shower valve control and it worked great, just keep adding a little water and it's like butter on porcelain with minimal dust. It can be hard to start because it wants to jump around, what I did was use a dremmel diamond tip bit and scored the tile where I was gonna drill, then I started with this bit at 45 degrees and went slowly to perpendicular

## Features

- *Package Included: 2 x Diamond Drill Bits. Cutting Hole Diameter is 3/4" / 20mm, Shank Diameter is 7/32" / 7.78mm, Total Length is 2.17" / 55mm.
- *Quality Selection: These diamond drill bits are made of high-speed steel which is high quality and durable. With a nickel-plated coated body to resist corrosion, which has a long service life. Large chip holes to ensure that when the punching smooth, punching accurate.
- *Smoothly Cutting: A thicken diamond dust coating on the tops offers superior cutting strength for creates a high precision, smooth cut with no broken edges. Reduced drill speeds, low drill pressure, and increased use of water lubrication will extend drill bit life considerably.
- *Multiple Applications: The diamond drill bit can remove a complete 20mm diameter hole on glass, tiles, granite, ceramic. In addition to cutting holes for glass, the Hole Saw comes in handy for tile bottles, blocks jars, fiberglass, porcelain tile, ceramic, slate, marble, light stone. Not for use on Concrete or for depths beyond about 1/2".
- *Hassle-Free Guarantee: PHITUODA's products can only be packed and shipped after strict quality inspection. If you are not satisfied within 90-days, send 1 simple email and receive a 100% money-back refund. We're so confident you will love our products like our other 5-star reviewers! You will be amazed at the customer service you receive after the sale!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08CX8BTM2 |
| Best Sellers Rank | #36,185 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #16 in Core Drill Bits |
| Brand | PHITUODA |
| Cutting Angle String | 45 Degrees |
| Cutting Diameter | 0.75 Inches |
| Date First Available | July 14, 2020 |
| Finish Type | Nickel |
| Item Weight | 1.44 ounces |
| Item model number | TUOR1345 |
| Manufacturer | PHITUODA |
| Material | Diamond, High Speed Steel (HSS) |
| Number of Flutes | 1 |
| Number of Pieces | 2 |
| Package Dimensions | 3.62 x 2.2 x 0.87 inches |
| Set Name | 2-Piece Set |
| Shank Type | Straight |
| Surface Recommendation | ['Ceramic', 'Glass', 'Porcelain'] |
| Tool Flute Type | Straight |
| Unit Count | 2 Count |

## Product Details

- **Cutting Angle String:** 45 Degrees
- **Cutting Diameter:** 0.75 Inches
- **Finish Type:** Nickel
- **Material:** Diamond, High Speed Steel (HSS)
- **Shank Type:** Straight

## Images

![2pcs 3/4-Inch / 20mm Diamond Drill Bits, Small Diamond Hole Saw Hollow Core Drill Bits for Glass Ceramic Porcelain Tiles Marble Granite Quartz - Image 1](https://m.media-amazon.com/images/I/31xfekpnn4L.jpg)
![2pcs 3/4-Inch / 20mm Diamond Drill Bits, Small Diamond Hole Saw Hollow Core Drill Bits for Glass Ceramic Porcelain Tiles Marble Granite Quartz - Image 2](https://m.media-amazon.com/images/I/41716gomi1L.jpg)
![2pcs 3/4-Inch / 20mm Diamond Drill Bits, Small Diamond Hole Saw Hollow Core Drill Bits for Glass Ceramic Porcelain Tiles Marble Granite Quartz - Image 3](https://m.media-amazon.com/images/I/4183b1fbZZL.jpg)
![2pcs 3/4-Inch / 20mm Diamond Drill Bits, Small Diamond Hole Saw Hollow Core Drill Bits for Glass Ceramic Porcelain Tiles Marble Granite Quartz - Image 4](https://m.media-amazon.com/images/I/41a7R7RFSIL.jpg)
![2pcs 3/4-Inch / 20mm Diamond Drill Bits, Small Diamond Hole Saw Hollow Core Drill Bits for Glass Ceramic Porcelain Tiles Marble Granite Quartz - Image 5](https://m.media-amazon.com/images/I/41myD8NJw2L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: will this bit work in a Dremel?**
A: No, the shafts are too big to fit in the Dremel.

**Q: will it cut a hole in a mirror**
A: Sure it will. But it takes dinner care and patience getting started. Tip it from vertical and use a thumb port finger to keep it from running away. Then slowly to it to vertical as the glass is scored. All with low speed and a fan of water. Maybe practice on a junk piece of glass before attacking you're mirror.

**Q: Can this cut through asbestos siding?**
A: Probably, but I think a similar bit with teeth and a guiding drill bit in the center would work better.

**Q: Can I use these to drilling through a glass plate ?**
A: Yes, provided it is non-tempered glass.  They make spear shaped bits just for boring holes through glass which would be a better choice but these will work if you're cutting through a smooth flat surface such as a sheet of glass.  A pickle  jar is another matter and you would want the pointed bits for that.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works Well on Terracotta
*by T***N on May 10, 2025*

This bit was a great value because it performed exactly as I had hoped. I used the bit to drill a hole to insert a spigot into a terracotta planter. The pot will be used with a rainchain to collect and divert roof runoff water. I used a regular handheld drill on fast speed at first to make an indentation into the pot and then I used slow speed to drill the hole. I poured water over the area about every 5 seconds to keep the pot from cracking. I found the bit easy to use because I didn't even have to press hard with the drill and I have small hands and am not partcularly strong. The hole (lol) process took less than five minutes and the bit seems barely worn. In the pictures, the worn bit is on the left. I used size 25mm for a 1 inch hole but had to enlarge the hole slightly because of the threads on the spigot; the 26mm bit would have worked better. I think I got my money's worth.

### ⭐⭐⭐⭐⭐ Does the job
*by H***. on September 22, 2025*

I brought this for a specific job, cutting hole for shower valve control and it worked great, just keep adding a little water and it's like butter on porcelain with minimal dust. It can be hard to start because it wants to jump around, what I did was use a dremmel diamond tip bit and scored the tile where I was gonna drill, then I started with this bit at 45 degrees and went slowly to perpendicular

### ⭐⭐⭐⭐ OK for a few holes
*by K***C on June 5, 2025*

These work great for 1 or 2 holes but after that, they get really dull & don't work

## Frequently Bought Together

- PHITUODA 2pcs 3/4-Inch / 20mm Diamond Drill Bits, Small Diamond Hole Saw Hollow Core Drill Bits for Glass Ceramic Porcelain Tiles Marble Granite Quartz
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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-07*